Microwave assisted synthesis and biological evaluation of 2-aryl/heteryl-3-aryloxy/heteryloxy-4h-chromones (4-oxo-2-aryl/heteryl-4h-chromen-3-yl-carboxylate).

2-Aryl/heteryl-3-aryloxy/heteryloxy-4H-chromones 5 have been synthesized through a series of reactions starting from phenols under microwave irradiation. This process is an effective alternative to the traditional thermal heating method. The yields are excellent and the reaction time is in a few minutes. These compounds have been characterized on the basis of IR, 1H NMR, 13C NMR and Mass spectrometry and evaluated for antibacterial activity.